RT Journal Article
T1 The role of temperature in the photoluminescence quantum yield (PLQY) of Ag2S-based nanocrystals
A1 Wang, Peijiang
A1 Morales Márquez, Rafael
A1 Cervás, Gabriel
A1 Hernández Medel, Alejandro
A1 París Ogayar, Marina
A1 Jiménez de Aberasturi, D.
A1 de Isidro Gómez, Ana Inés
A1 Torres Pardo, María De La Almudena
A1 Palomares, Francisco Javier
A1 García Orrit, Saül
A1 Sousa, Célia T.
A1 Espinosa, Ana
A1 Telle, Helmut H.
A1 Ortgies, Dirk H.
A1 Vega Mayoral, Víctor
A1 Cabanillas González, Juan
A1 Martín Rodríguez, Emma
A1 Resch Genger, Ute
A1 Wegner, K. David
A1 Juárez, Beatriz H.
AB Highly emissive Ag2S nanocrystals (NCs) passivated with a gradated shell incorporating Se and Zn were synthesized in air, and the temperature dependence of their photoluminescence quantum yield (PLQY) was quantified in both organic and aqueous media at ∼1200 nm. The relevance of this parameter, measured at physiological temperatures, is highlighted for applications that rely on the near infrared (NIR) photoluminescence of NCs, such as deep NIR imaging or luminescence nanothermometry. Hyperspectral NIR imaging shows that Ag2S-based NCs with a PLQY in organic media of about 10% are inefficient for imaging at 40 °C through 20 mm thick tissue with low laser irradiation power densities. In contrast, water-transferred Ag2S-based NCs with an initial PLQY of 2% in water exhibit improved robustness against temperature changes, enabling improved imaging performance.
PB RSC
SN 2051-6347
SN 2051-6355
YR 2024
FD 2024-09-25
LK https://hdl.handle.net/20.500.14352/113618
UL https://hdl.handle.net/20.500.14352/113618
LA eng
NO Ministerio de Ciencia, Innovación y Universidades
NO Agencia Estatal de Investigación
NO Instituto de Salud Carlos III
NO Comunidad Autónoma de Madrid
DS Docta Complutense
RD 6 abr 2025